+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#ifndef CEPH_LIBRBD_EXCLUSIVE_LOCK_PRE_RELEASE_REQUEST_H
-#define CEPH_LIBRBD_EXCLUSIVE_LOCK_PRE_RELEASE_REQUEST_H
-
-#include "librbd/ImageCtx.h"
-#include <string>
-
-class AsyncOpTracker;
-class Context;
-
-namespace librbd {
-
-struct ImageCtx;
-
-namespace exclusive_lock {
-
-template <typename ImageCtxT = ImageCtx>
-class PreReleaseRequest {
-public:
- static PreReleaseRequest* create(ImageCtxT &image_ctx, bool shutting_down,
- AsyncOpTracker &async_op_tracker,
- Context *on_finish);
-
- ~PreReleaseRequest();
- void send();
-
-private:
- /**
- * @verbatim
- *
- * <start>
- * |
- * v
- * PREPARE_LOCK
- * |
- * v
- * CANCEL_OP_REQUESTS
- * |
- * v
- * BLOCK_WRITES
- * |
- * v
- * WAIT_FOR_OPS
- * |
- * v
- * INVALIDATE_CACHE
- * |
- * v
- * FLUSH_NOTIFIES . . . . . . . . . . . . . .
- * | .
- * v .
- * CLOSE_JOURNAL .
- * | (journal disabled, .
- * v object map enabled) .
- * CLOSE_OBJECT_MAP < . . . . . . . . . . . .
- * | .
- * v (object map disabled) .
- * <finish> < . . . . . . . . . . . . . . . . .
- *
- * @endverbatim
- */
-
- PreReleaseRequest(ImageCtxT &image_ctx, bool shutting_down,
- AsyncOpTracker &async_op_tracker, Context *on_finish);
-
- ImageCtxT &m_image_ctx;
- bool m_shutting_down;
- AsyncOpTracker &m_async_op_tracker;
- Context *m_on_finish;
-
- int m_error_result = 0;
-
- decltype(m_image_ctx.object_map) m_object_map = nullptr;
- decltype(m_image_ctx.journal) m_journal = nullptr;
-
- void send_prepare_lock();
- void handle_prepare_lock(int r);
-
- void send_cancel_op_requests();
- void handle_cancel_op_requests(int r);
-
- void send_block_writes();
- void handle_block_writes(int r);
-
- void send_wait_for_ops();
- void handle_wait_for_ops(int r);
-
- void send_invalidate_cache(bool purge_on_error);
- void handle_invalidate_cache(int r);
-
- void send_flush_notifies();
- void handle_flush_notifies(int r);
-
- void send_close_journal();
- void handle_close_journal(int r);
-
- void send_close_object_map();
- void handle_close_object_map(int r);
-
- void send_unlock();
-
- void finish();
-
- void save_result(int result) {
- if (m_error_result == 0 && result < 0) {
- m_error_result = result;
- }
- }
-
-};
-
-} // namespace exclusive_lock
-} // namespace librbd
-
-#endif // CEPH_LIBRBD_EXCLUSIVE_LOCK_PRE_RELEASE_REQUEST_H